Positioning tool for assembling motor rotor

Abstract

The utility model discloses a kind of positioning tool for motor rotor assembly, comprising: base, fixed unit, calibration unit and lock unit;The base includes fixed seat and rotating seat, the rotating seat bearing is connected on fixed seat, the rotating seat is used to place silicon steel sheet, the rotating seat is formed with first jack along the center axis direction of silicon steel sheet, and the first jack is used to embed one end of rotor shaft;The fixed unit is located on rotating seat, and the fixed unit is used to fix silicon steel sheet on rotating seat;The calibration unit is located on rotating seat, and the calibration unit has multiple angle marks;The lock unit is located on fixed seat, and the relative position of the calibration unit is adjusted multiple angle marks and lock unit, to realize the angle adjustment of silicon steel sheet, and the lock unit is used to lock the rotating seat after adjusting the angle of silicon steel sheet, and the utility model has the advantage of improving the accuracy of the misregistration angle between each group of silicon steel sheet.

Description

Technical Field

[0001] This utility model belongs to the field of motor manufacturing technology, specifically relating to a positioning fixture for assembling a motor rotor. Background Technology

[0002] To reduce harmonics, cogging torque, and electromagnetic noise, the rotor of a permanent magnet motor consists of multiple sets of staggered silicon steel sheets. Specifically, the silicon steel sheets of the motor rotor are divided into several groups, each group is fixed and molded, and then sequentially fitted onto the rotor shaft, offset by a specific angle in the circumferential direction. However, during assembly, applying thrust to the rotor shaft can easily cause the silicon steel sheet groups to twist, making it difficult to achieve the ideal accuracy in the offset angles of each group. Therefore, improving the accuracy of the offset angles of each group of silicon steel sheets has become an important issue in ensuring the stable performance of the motor. To solve this problem, a positioning fixture for motor rotor assembly is proposed. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art.

[0004] Therefore, this utility model proposes a positioning fixture for assembling a motor rotor, which has the advantage of improving the accuracy of the misalignment angle between each group of silicon steel sheets.

[0005] A positioning fixture for assembling a motor rotor according to an embodiment of the present invention includes: a base, a fixing unit, a calibration unit, and a locking unit; the base includes a fixed seat and a rotating seat, the rotating seat being bearing-connected to the fixed seat, the rotating seat being used to place silicon steel sheets, and the rotating seat having a first insertion hole formed along the central axis of the silicon steel sheets, the first insertion hole being used to insert one end of the rotor shaft; the fixing unit is disposed on the rotating seat, and the fixing unit is used to fix the silicon steel sheets on the rotating seat; the calibration unit is disposed on the rotating seat, and the calibration unit has multiple angle marks; the locking unit is disposed on the fixed seat, the calibration unit adjusting the angle of the silicon steel sheets by adjusting the relative positions of the multiple angle marks and the locking unit, and the locking unit being used to lock the rotating seat after the angle of the silicon steel sheets has been adjusted.

[0006] According to one embodiment of the present invention, the calibration unit includes a plurality of teeth, which are spaced apart around the circumference of the rotating seat, and the interval between the plurality of teeth forms an angle mark.

[0007] According to one embodiment of the present invention, the locking unit includes a slider, which is slidably connected to the fixed base along the radial direction of the silicon steel sheet. The end of the slider facing the rotating base has a tooth, which can be inserted into or disengaged between two adjacent teeth.

[0008] According to one embodiment of the present invention, the slider is connected to a tension spring, one end of the tension spring is fixedly connected to the slider, and the other end of the tension spring is fixedly connected to a fixed base. The tension spring is used to pull the slider to engage between two adjacent teeth.

[0009] According to one embodiment of the present invention, the fixing unit includes at least two positioning posts, which are spaced apart. The positioning posts are used to penetrate the hollowed-out parts on the silicon steel sheet to prevent the silicon steel sheet from shifting.

[0010] According to one embodiment of the present invention, a groove is formed on the upper surface of the rotating seat, and the groove is coaxial with the first insertion hole.

[0011] According to one embodiment of the present invention, a fixing frame is also included. One end of the fixing frame is used to fix the rotor shaft, and the other end of the fixing frame is connected to a stamping device so that the rotor shaft can be pressed down or lifted up by the stamping device.

[0012] According to one embodiment of the present invention, a second insertion hole is formed on the lower surface of the fixing frame along the central axis direction. The second insertion hole is used to insert the other end of the rotor shaft. A plurality of threaded holes are formed on the outer surface of the fixing frame. The threaded holes pass through the second insertion hole so as to fix the rotor shaft by screwing a bolt into the threaded hole.

[0013] According to one embodiment of the present invention, the upper surface of the fixing frame is flat to facilitate receiving the downward pressure of the stamping equipment. A connecting plate is sleeved on the upper end of the fixing frame, and the connecting plate is fixedly connected to the fixing frame. The connecting plate is used for detachable connection with the stamping equipment.

[0014] According to one embodiment of the present invention, the length of the second insertion hole is the same as the required distance from the other end of the rotor shaft to the silicon steel sheet, so as to play a positioning role when assembling the first set of silicon steel sheets.

[0015] The beneficial effects of this utility model are that it uses a fixing unit to position the silicon steel sheet, avoiding the phenomenon of the silicon steel sheet rotating under force when the rotor shaft passes through it, thus ensuring the stability of the connection between silicon steel sheets in the same group. The angle of each group of silicon steel sheets can be adjusted by adjusting the rotating seat. In addition, the locking unit is used to fix the rotating seat, ensuring the stability of the rotating seat when assembling the rotor shaft and silicon steel sheets. Therefore, it ensures the accuracy of the misalignment angle between each group of silicon steel sheets after assembly.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments with accompanying drawings, in which:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model in its assembled state;

[0020] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the base structure of this utility model;

[0022] Figure label:

[0023] 11. Fixed base; 12. Rotary base; 121. First insertion hole; 122. Groove; 21. Tooth; 31. Slider; 32. Tension spring; 41. Positioning post; 5. Fixed bracket; 52. Connecting plate. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The positioning fixture for assembling the motor rotor of this utility model is described in detail below with reference to the accompanying drawings.

[0028] like Figures 1-3 As shown, the positioning fixture for assembling a motor rotor according to an embodiment of the present invention includes: a base, a fixing unit, a calibration unit, and a locking unit; the base includes a fixed seat 11 and a rotating seat 12, the rotating seat 12 being bearing-connected to the fixed seat 11, the rotating seat 12 being used to place silicon steel sheets, and the rotating seat 12 having a first insertion hole 121 formed along the central axis of the silicon steel sheets, the first insertion hole 121 being used to insert one end of the rotor shaft; the fixing unit is disposed on the rotating seat 12, and the fixing unit is used to fix the silicon steel sheets on the rotating seat 12; the calibration unit is disposed on the rotating seat 12, and the calibration unit has multiple angle marks; the locking unit is disposed on the fixed seat 11, the calibration unit adjusting the angle of the silicon steel sheets by adjusting the relative positions of the multiple angle marks and the locking unit, and the locking unit locking the rotating seat 12 after the angle of the silicon steel sheets has been adjusted.

[0029] In this embodiment, a locking unit is used to fix the rotating seat 12. Then, a set of silicon steel sheets is placed on the rotating seat 12, and the fixing unit fixes the set of silicon steel sheets. At this time, one end of the rotor shaft is inserted into the silicon steel sheets and the first insertion hole 121 to assemble the rotor shaft and the set of silicon steel sheets. Then, the rotor shaft is removed. At this time, the set of silicon steel sheets assembled with it leaves the rotating seat 12 along with the rotor shaft. Then, the rotating seat 12 is rotated to adjust the angle of the fixing unit above it. Then, another set of silicon steel sheets is placed on the rotating seat 12 and fixed by the fixing unit. Then, the rotor shaft that was just removed is inserted into the rotating seat 12. By repeatedly assembling a set of silicon steel sheets on the base 12 and the first insertion hole 121, the misaligned assembly of the silicon steel sheets and the rotor shaft can be completed. A fixing unit is used to position the silicon steel sheets, avoiding the phenomenon of the silicon steel sheets rotating under force when the rotor shaft passes through them, thus ensuring the stability of the connection between the silicon steel sheets in the same group. The angle of each group of silicon steel sheets can be adjusted by adjusting the rotating base 12. In addition, a locking unit is used to fix the rotating base 12, ensuring the stability of the rotating base 12 when assembling the rotor shaft and silicon steel sheets. Therefore, the accuracy of the misalignment angle between each group of silicon steel sheets after assembly is ensured.

[0030] The calibration unit includes multiple teeth 21, which are spaced apart around the circumference of the rotating seat 12, and the intervals between the multiple teeth 21 form angular marks.

[0031] The locking unit includes a slider 31, which is slidably connected to the fixed base 11 along the radial direction of the silicon steel sheet. The end of the slider 31 facing the rotating base 12 has a tooth, which can be inserted into or disengaged between two adjacent teeth 21.

[0032] In this embodiment, the protruding tooth has a tooth tip. When it is embedded between two adjacent teeth 21, the protruding tooth meshes with the two teeth 21 to fix the rotating seat 12 by limiting the slider 31 in the circumferential direction of the silicon steel sheet through the fixing seat 11. The width of each tooth 21 can be set according to the misalignment angle requirements between each group of silicon steel sheets.

[0033] The slider 31 is connected to a tension spring 32. One end of the tension spring 32 is fixedly connected to the slider 31, and the other end of the tension spring 32 is fixedly connected to the fixed seat 11. The tension spring 32 is used to pull the slider 31 to engage between two adjacent teeth 21.

[0034] In this embodiment, a stop is formed on the outer surface of the slider 31, and a tension spring 32 is located between the stop and the fixed seat 11 to always pull the slider 31 closer to the rotating seat 12, so that the slider 31 is locked to the rotating seat 12 in its normal state. If it is necessary to adjust the angle of the rotating seat 12, the slider 31 is pulled in the opposite direction to disengage the slider 31 from the teeth 21. There can be one or more tension springs 32. When there is only one tension spring 32, it can be sleeved on the outer surface of the slider 31, and then the stop and the fixed seat 11 are fixed at both ends respectively. If there are multiple tension springs 32, they can be located on the side surface of the slider 31. Multiple tension springs 32 can be evenly spaced to ensure the stability of the force applied to the slider 31.

[0035] The fixing unit includes at least two positioning posts 41, which are spaced apart. The positioning posts 41 are used to insert into the hollow parts on the silicon steel sheet to prevent the silicon steel sheet from shifting.

[0036] In this embodiment, the outer surface of the positioning post 41 can be completely attached to the hollow inner surface on the silicon steel sheet, or only a part of the outer surface of the positioning post 41 can be attached to the hollow inner surface on the silicon steel sheet, so as to only fix the silicon steel sheet and prevent it from shifting.

[0037] The upper surface of the rotating seat 12 has a groove 122, which is coaxial with the first insertion hole 121.

[0038] In this embodiment, the groove 122 facilitates the placement of silicon steel sheets. Workers can simply pinch the upper and lower ends through the through hole in the center of a set of silicon steel sheets, which is convenient for one-handed operation and also facilitates the horizontal placement of silicon steel sheets.

[0039] It also includes a fixing frame 5, one end of which is used to fix the rotor shaft, and the other end of which is connected to a stamping device to press down or lift the rotor shaft through the stamping device.

[0040] The lower surface of the fixing bracket 5 has a second insertion hole formed along the central axis direction. The second insertion hole is used to insert the other end of the rotor shaft. Multiple threaded holes are formed on the outer surface of the fixing bracket 5. The threaded holes pass through the second insertion hole so that the rotor shaft can be fixed by screwing a bolt into the threaded hole.

[0041] The upper surface of the fixed frame 5 is flat to receive the downward pressure of the stamping equipment. A connecting plate 52 is sleeved on the upper end of the fixed frame 5. The connecting plate 52 is fixedly connected to the fixed frame 5 and is used for detachable connection with the stamping equipment.

[0042] In this embodiment, multiple threaded holes are arranged in pairs opposite each other. The other end of the rotor shaft is inserted into the second insertion hole, and the rotor shaft is clamped and fixed by screwing a bolt into the threaded hole. Figure 2 As shown, a notch is formed on the circumferential surface of the connecting disc 52, and the notch extends radially toward the central axis of the connecting disc 52 to facilitate a detachable connection with the stamping equipment by means of snap-fit.

[0043] The length of the second insertion hole is the same as the required distance from the other end of the rotor shaft to the silicon steel sheet, so as to play a positioning role when assembling the first set of silicon steel sheets.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A positioning fixture for assembling a motor rotor, characterized in that, include: The base includes a fixed seat (11) and a rotating seat (12). The rotating seat (12) is bearing connected to the fixed seat (11). The rotating seat (12) is used to place silicon steel sheets. The rotating seat (12) has a first insertion hole (121) formed along the central axis of the silicon steel sheets. The first insertion hole (121) is used to insert one end of the rotor shaft. A fixing unit is provided on a rotating base (12) and is used to fix silicon steel sheets on the rotating base (12); A calibration unit is provided on a rotating base (12), and the calibration unit has multiple angle marks; The locking unit is located on the fixed base (11). The calibration unit adjusts the angle of the silicon steel sheet by adjusting the relative position of multiple angle marks with the locking unit. The locking unit is used to lock the rotating base (12) after the angle of the silicon steel sheet is adjusted.

2. The positioning fixture for assembling a motor rotor according to claim 1, characterized in that, The calibration unit includes a plurality of teeth (21), which are spaced apart around the circumference of the rotating seat (12), and the interval between the plurality of teeth (21) forms an angle mark.

3. The positioning fixture for assembling a motor rotor according to claim 2, characterized in that, The locking unit includes a slider (31), which is slidably connected to the fixed seat (11) along the radial direction of the silicon steel sheet. The end of the slider (31) facing the rotating seat (12) has a tooth, which can be inserted into or removed from two adjacent teeth (21).

4. The positioning fixture for assembling a motor rotor according to claim 3, characterized in that, The slider (31) is connected to a tension spring (32). One end of the tension spring (32) is fixedly connected to the slider (31), and the other end of the tension spring (32) is fixedly connected to the fixed seat (11). The tension spring (32) is used to pull the slider (31) to be embedded between two adjacent teeth (21).

5. The positioning fixture for assembling a motor rotor according to claim 4, characterized in that, The fixing unit includes at least two positioning posts (41), which are spaced apart. The positioning posts (41) are used to penetrate the hollow parts on the silicon steel sheet to prevent the silicon steel sheet from shifting.

6. The positioning fixture for assembling a motor rotor according to claim 5, characterized in that, The upper surface of the rotating seat (12) is formed with a groove (122), which is coaxial with the first insertion hole (121).

7. The positioning fixture for assembling a motor rotor according to claim 6, characterized in that, It also includes a fixing frame (5), one end of which is used to fix the rotor shaft, and the other end of which is connected to a stamping device to press down or lift the rotor shaft through the stamping device.

8. The positioning fixture for assembling a motor rotor according to claim 7, characterized in that, The lower surface of the fixing frame (5) has a second insertion hole formed along the central axis direction. The second insertion hole is used to insert the other end of the rotor shaft. The outer surface of the fixing frame (5) has a plurality of threaded holes. The threaded holes pass through the second insertion hole so as to fix the rotor shaft by screwing a bolt into the threaded hole.

9. The positioning fixture for assembling a motor rotor according to claim 8, characterized in that, The upper surface of the fixing frame (5) is flat to receive the downward pressure of the stamping equipment. A connecting plate (52) is sleeved on the upper end of the fixing frame (5). The connecting plate (52) is fixedly connected to the fixing frame (5). The connecting plate (52) is used for detachable connection with the stamping equipment.

10. The positioning fixture for assembling a motor rotor according to claim 9, characterized in that, The length of the second insertion hole is the same as the required distance from the other end of the rotor shaft to the silicon steel sheet, so as to play a positioning role when assembling the first set of silicon steel sheets.

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